Rockwell Automation Publication 440R-UM012E-EN-P - November 2018 11
Overview Chapter 1
outputs and powers the guard locking interlock through 51 and L61 to unlock
the gate.
If the proximity sensor speed does not decrease below the SLS1 setting, the
GLP safety relay continues to wait with the 51/L61 status indicator flashing,
and the safety gate remains locked. Once the proximity sensor speed drops
below SLS1 setting, the GLP safety relay begins the Frequency Measurement
timer. The proximity sensor speed must remain below SLS1 during the
Frequency Measurement timer.
Logic Setting 3 - Safe Limited Slow Speed, Logic IN Off
You initiate a slow speed command by pressing a momentary push button. The
GLP safety relay issues a slow speed command to the machine control system
by turning terminal Y32 ON. When the GLP safety relay determines that the
speed of the proximity signals is less than the SLS1 setting, the GLP safety relay
issues an unlock command to the guard locking interlock, while keeping its
safety outputs ON. If the speed of the machine exceeds the SLS1 setting, the
GLP safety relay turns it safety outputs OFF.
The single wire safety signal at wiring terminal L12 is ignored.
Logic Setting 4 - Safe Limited Slow Speed with Logic IN
The single wire safety signal at wiring terminal L12 must be active to turn on
the GLP safety relay outputs.
You initiate a slow speed command by pressing the unlock push button. The
GLP safety relay issues a slow speed command to the machine control system
by turning terminal Y32 ON. When the GLP safety relay determines that the
speed of the proximity signals is less than the SLS1 setting, the GLP safety relay
issues an unlock command to the guard locking interlock, while keeping its
safety outputs ON. If the speed of the machine exceeds the SLS1 setting, the
GLP safety relay turns it safety outputs OFF.
When the single wire safety signal at terminal L12 becomes inactive, the GLP
safety relay initiates a shutdown. If the machine is running at production speed,
the GLP safety relay turns on Y32. When the proximity speed falls below the
safely limited speed, the GLP safety relay turns OFF its outputs. If the machine
is already running at safe limited slow speed, the GLP safety relay turns off its
safety outputs and issues an unlock command to the guard locking interlock.
TIP If the SWS input turns back ON or if the Reset button is pressed within the
Frequency Measuring Time, the GLP safety relay turns the Y32 auxiliary
output back ON.
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